! Demonstrates PetscGetVersionNumber(): Fortran Example


program main
#include <petsc/finclude/petscsys.h>
      use petscsys
      
      implicit none
      PetscErrorCode     :: ierr
      PetscInt           :: major,minor,subminor
      character(len=256) :: outputString
      
      ! Every PETSc routine should begin with the PetscInitialize() routine.

      call PetscInitialize(PETSC_NULL_CHARACTER,ierr)
      if (ierr /= 0) then
        write(6,*)'Unable to initialize PETSc'
        stop
      endif
      
      call PetscGetVersionNumber(major,minor,subminor,PETSC_NULL_INTEGER,ierr)
      CHKERRA(ierr)

      if (major /= PETSC_VERSION_MAJOR) then
        write(outputString,*)'Library major',major,'does not equal include',PETSC_VERSION_MAJOR
        SETERRA(PETSC_COMM_SELF,PETSC_ERR_PLIB,trim(outputString))
      endif

      if (minor /= PETSC_VERSION_MINOR) then
        write(outputString,*)'Library minor',minor,'does not equal include',PETSC_VERSION_MINOR
        SETERRA(PETSC_COMM_SELF,PETSC_ERR_PLIB,trim(outputString))
      endif

      if (subminor /= PETSC_VERSION_SUBMINOR) then
        write(outputString,*)'Library subminor',subminor,'does not equal include',PETSC_VERSION_SUBMINOR
        SETERRA(PETSC_COMM_SELF,PETSC_ERR_PLIB,trim(outputString))
      endif
      
      call PetscFinalize(ierr)
      

end program main

!/*TEST
!
!   test:
!
!TEST*/